Operator acknowledges the proximity of the listed wells. Operator assures that this offset list will be remediated per the DJ Basin Horizontal Offset Policy (option 4). Operator will submit a Form 42 (“OTHER – AS SPECIFIED BY PERMIT CONDITION”) stating that appropriate mitigation will be completed, during the hydraulic stimulation of this permitted well. This Form 42 shall be filed 48 hours prior to stimulation. Operator will assure that the offset well’s Bradenhead is open and monitored during the entire stimulation treatment – a person will monitor for any evidence of fluid, a Bradenhead test will be performed prior to the beginning of stimulation.
Well Name API #
LAURIDSON VV 18-16 (API 05-123-17407)
LAURIDSON VV 18-10 (API 05-123-17418)

Form: (02 )40153809606/22/2018

Bradenhead tests shall be performed according to the following schedule and the Form
17 submitted within 10 days of each test:
1) Within 60 days of rig release and prior to stimulation and
2) If a delayed completion, 6 months after rig release and prior to stimulation.
3) Within 30 days after first production, as reported on Form 5A.

Form: (02 )40153809606/22/2018

1) Submit Form 42 electronically to COGCC 48 hours prior to MIRU (spud notice) for the first well activity with a rig on the pad and provide 48 hour spud notice via Form 42 for all subsequent wells drilled on the pad.
2) Comply with Rule 317.j. and provide cement coverage from TD to a minimum of 200' above Niobrara and from 200’ below Shannon to 200’ above Sussex. Verify coverage with cement bond log.
3) Oil-based drilling fluid is to be used only after all fresh water aquifers are covered.

COGIS - Best Management Practices

BMPSearch Results -
8 record(s) returned.

Source
Document

BMP Type

BMP

Form: (02 )40153809606/22/2018

Drilling/Completion Operations

Upon initial rig-up and at least once every thirty (30) days during drilling operations thereafter, pressure testing of the casing string and each component of the blowout prevention equipment including flange connections will be performed to seventy percent (70%) of working pressure or seventy percent (70%) of the internal yield of casing, whichever is less. Pressure testing shall be conducted and the documented results will be retained by the operator for inspection by the Director for a period of one (1) year. Activation of the pipe rams for function testing shall be conducted on a daily basis when practicable.

Form: (02 )40153809606/22/2018

Drilling/Completion Operations

Adequate blowout prevention equipment will be used on all well servicing operations.

Form: (02 )40153809606/22/2018

Drilling/Completion Operations

Backup stabbing valves shall be required on well servicing operations during reverse circulation. Valves shall be pressure tested before each well servicing operation using both low-pressure air and high-pressure fluid.

Form: (02 )40153809606/22/2018

Drilling/Completion Operations

No drill stem tests will be performed.

Form: (02 )40153809606/22/2018

Drilling/Completion Operations

Prior to drilling operations, Crestone will perform an anti-collision scan of existing offset wells that have the potential of being within close proximity of the proposed well. This anti-collision scan will include definitive MWD or gyro surveys of the offset wells with included error of uncertainty per survey instrument, and compared against the proposed wellpath with its respective error of uncertainty. If current surveys do not exist for the offset wells, the Operator may have gyro surveys conducted to verify bottomhole location. The proposed well will only be drilled if the anti-collision scan results indicate that there is not a risk for collision, or harm to people or the environment. For the proposed well, upon conclusion of drilling operations, an as-constructed gyro survey will be submitted to COGCC with the Form 5.

Form: (02 )40153809606/22/2018

Drilling/Completion Operations

Crestone will comply with the “COGCC Policy for Bradenhead Monitoring During Hydraulic Fracturing Treatments in the Greater Wattenberg Area”, dated May 29, 2012.

Form: (02 )40153809606/22/2018

Drilling/Completion Operations

Rule 317.p Logging Program
One of the first wells drilled on the pad will be logged with Open Hole Resistivity Log and Gamma Ray Log from the kick-off point to into the surface casing. All wells on the pad will have a cement bond log with gamma-ray run on production casing (or on intermediate casing if production liner is run) into the surface casing. The horizontal portion of every well will be logged with a measured-while-drilling gamma-ray log. The form 5, Completion Report, for each well on the pad will list all logs run and have those logs attached. The Form 5 for a well without open-hole logs shall clearly state "No open-hole logs were run" and shall clearly identify (by API#, well name & number) the well in which open-hole logs were run.

Form: (04 )40186900201/10/2019

Drilling/Completion Operations

One of the first wells drilled on the pad will be logged with Cased hole Pulsed Neutron
Log with Gamma Ray Log from the kick-off point to into the surface casing. All wells on
the pad will have a cement bond log with gamma-ray run on production casing (or on
intermediate casing if production liner is run) into the surface casing. The horizontal
portion of every well will be logged with a measured while-drilling gamma-ray log. The
Form 5, Completion Report, for each well on the pad will list all logs run in that well
and have those logs attached. The Form 5 for each well shall clearly state “No openhole
logs were run” and shall reference the Rule 317.p Exception granted for the well.